Headphone amp for Sennheiser 555s and mp3s--worthwhile?
January 28, 2014 9:31 AM Subscribe
I've been thinking about building this little Altoid tin headphone amp kit for listening with my Sennheiser 555s. Granted, the point of building the kit is, well, building the kit--but given the limitations of a (cheap) kit-built design and the fact that I listen exclusively to mp3s on my iPhone or Mac, will there be a perceptible improvement in sound from the cans? Is there more to the sound of my mp3s that I might not be hearing just driving the Sennheisers with the juice from the iPhone's or Mac's headphone jack that would merit stepping up the signal with the little amp?